Case for drill bit set:
1,5 mm
2 mm
2,5 mm
3 mm
3,2 mm
3,5 mm
4 mm
4,2 mm
4,5 mm
5 mm
5,5 mm
6 mm
7 mm
8 mm
9 mm
10 mm
12 mm
and small storage space.
Use 2mm thick metal wire as the axis!
You may need to cover the printer!
The author hasn't provided the model origin yet.